I'm having troubles with the names of columns.
quantmod deal with stock quotes. I've created an array of the first 5
closing prices from Jan 2007. (Is there a problem that the name is the same
as the variable name? There shouldn't be.)
close
close
2007-01-03 1416.60
2007-01-04
I understand Josh's example:
mat - matrix(1:10, dimnames = list(NULL, A))
cbind(X = 11:20, Y = mat + 1)
cbind(X = 11:20, Y = mat[, A] + 1)
In the line, cbind(X = 11:20, Y = mat + 1), it would be nice if an error or
warning message were issued to the effect that the Y = part is ignored or
not
tolerable.
If this is frustrating to you you should stop using the class.
Jeff
Jeffrey Ryan|Founder| jeffrey.r...@lemnica.com
jeffrey.r...@lemnica.com
www.lemnica.com
On May 8, 2011, at 2:07 PM, Russ Abbott russ.abb...@gmail.com wrote:
I'm having troubles with the names
,
On May 8, 2011 6:29 PM, Russ Abbott russ.abb...@gmail.com wrote:
Hi Jeff,
The xts class has some very nice features, and you have done a valuable
service in developing it.
My primary frustration is how difficult it seems to be to find out what
went
wrong when my code doesn't work. I've
-consuming.
Peter Ehlers
On 2011-05-05 10:42, Russ Abbott wrote:
Thanks. You're right. I didn't see that. I read the ?addTA help page,
which (annoyingly) didn't mention that feature, but I didn't read the
?TA page. (That page was mentioned as a see also, but not as a must see.)
I don't know
Hi,
I'm having trouble with quantmod's addTA plotting functions. They seem to
work fine when run from the command line. But when run inside a function,
only the last one run is visible. Here's an example.
test.addTA - function(from = 2010-06-01) {
getSymbols(^GSPC, from = from)
, May 5, 2011 at 3:39 AM, P Ehlers ehl...@ucalgary.ca wrote:
On 2011-05-05 0:47, Russ Abbott wrote:
Hi,
I'm having trouble with quantmod's addTA plotting functions. They seem to
work fine when run from the command line. But when run inside a function,
only the last one run is visible. Here's
Hi,
I'm still confused about how to find out what methods are defined for a
given class. For example, I know that
today - Sys.Date()
will produce an object of type Date. But I'm not sure what I can do with
Date objects or how I can find out.
?Date
refers me to the Date documentation page.
two more ( as.yearmon.Date and as.yearqtr.Date).
Regards,
Kenn
On Fri, Apr 29, 2011 at 9:05 AM, Russ Abbott russ.abb...@gmail.com
wrote:
Hi,
I'm still confused about how to find out what methods are defined for a
given class. For example, I know that
today - Sys.Date
variables in a quantmod
object.
Thanks.
*-- Russ Abbott*
*_*
*** Professor, Computer Science*
* California State University, Los Angeles*
* Google voice: 747-*999-5105
* blog: *http://russabbott.blogspot.com/
vita: http://sites.google.com/site
, Apr 8, 2011 at 8:36 PM, Russ Abbott russ.abb...@gmail.com wrote:
Here's how to do it in Haskell.
First define fibs to be an infinite list. Since Haskell is lazy, the list
isn't actually created until needed.
The function zipWith takes three arguments: a function and two lists. (It
is similar
be mixed with
negative subscripts
*-- Russ Abbott*
*_*
*** Professor, Computer Science*
* California State University, Los Angeles*
* Google voice: 747-*999-5105
* blog: *http://russabbott.blogspot.com/
vita: http://sites.google.com/site/russabbott
again: 1 1 1
[1] 3 5 8
*-- Russ Abbott*
*_*
*** Professor, Computer Science*
* California State University, Los Angeles*
* Google voice: 747-*999-5105
* blog: *http://russabbott.blogspot.com/
vita: http://sites.google.com/site/russabbott
]))
Error: object 'fibs' not found
But since this is a recursive definition in a context in which recursion is
not expected, an error message is produced.
*-- Russ *
On Fri, Apr 8, 2011 at 12:51 AM, peter dalgaard pda...@gmail.com wrote:
On Apr 8, 2011, at 06:08 , Russ Abbott wrote:
Haskell
Haskell is the prototypical lazy evaluation language. One can compute a
Fibonacci sequence by the Haaskell equivalent of the following R code.
fibs - c(0, 1, rep(0, 8))
fibs[3:10] - fibs + fibs[-1]
This works as follows.
fibs = 0, 1, 0, 0, 0, 0, 0, 0, 0, 0
fibs = 0, 1, 0, 0, 0, 0, 0, 0, 0, 0
Is it possible to refer to an object from within a method, as in *this *in
Java? I can't find anything about this in the documentation. Sorry if I
missed it.
Thanks.
*-- Russ Abbott*
*_*
*** Professor, Computer Science*
* California State
this?
Thanks.
*-- Russ Abbott*
*_*
*** Professor, Computer Science*
* California State University, Los Angeles*
* Google voice: 747-*999-5105
* blog: *http://russabbott.blogspot.com/
vita: http://sites.google.com/site/russabbott
itself is stored in '.self' and can be referenced that way.
HTH,
Janko
-Ursprüngliche Nachricht-
Von: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
Im
Auftrag von Russ Abbott
Gesendet: Samstag, 19. März 2011 23:35
An: r-help@r-project.org
Betreff
Wonderful! Thanks. I think I've got it.
You can even put
this - environment() at the top
as long as
this
is returned at the end.
I gather that the environment keeps accumulating elements even though it is
assigned to 'this' at the beginning.
I had thought that $ worked only on lists,
don't), rethink how you think of classes and objects in R (=
think functional language). Though, you would learn lots by playing
around with environments and scopes and R's method dispatching
mechanisms.
/Henrik
On Sat, Mar 19, 2011 at 6:45 PM, Russ Abbott russ.abb...@gmail.com
wrote:
Thanks
I'm reading Torgo (2010) *Data Mining with
R*http://www.liaad.up.pt/~ltorgo/DataMiningWithR/code.htmlin
preparation for a class I'll be teaching next quarter. Here's an
example
that is very non-functional.
pH - c(4.5,7,7.3,8.2,6.3)
names(pH) - c('area1','area2','mud','dam','middle')
pH
area1
-project.org
Subject: Re: [R] R as a non-functional language
On Sun, Mar 20, 2011 at 12:20 AM, Russ Abbott russ.abb...@gmail.com
wrote:
I'm reading Torgo (2010) *Data Mining with
R*http://www.liaad.up.pt/~ltorgo/DataMiningWithR/code.htmlin
preparation for a class I'll be teaching next quarter
22 matches
Mail list logo
